define antibiotics? who discover it? name two antibiotics?
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Antibiotic: A drug used to treat bacterial infections. ... Synthetic antibiotics, usually chemically related to natural antibiotics, have since been produced that accomplish comparable tasks. In 1926, Alexander Fleming discovered penicillin, a substance produced by fungi that appeared able to inhibit bacterial growth.
Penicillins such as penicillin and amoxicillin.
Cephalosporins such as cephalexin (Keflex)
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Medicines that kill or stop the growth of the disease-causing microorganisms, are called antibiotics.
Ex. Streptomycin, tetracycline and erythromycin, etc.
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